On Wed, 2010-06-02 at 09:32 +0800, Alan Stern wrote: > On Wed, 2 Jun 2010, Zhang Rui wrote: > > > On Tue, 2010-06-01 at 21:11 +0800, Alan Stern wrote: > > > My kernel log is full of hundreds of messages like these: > > > > > > ACPI Exception: AE_AML_BUFFER_LIMIT, Index (000000046) is beyond end of object (20090903/exoparg2-445) > > > ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_.STBR] (Node f701c918), AE_AML_BUFFER_LIMIT > > > ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.VGA_.LCDD._BCM] (Node f7017b58), AE_AML_BUFFER_LIMIT > > > ACPI Error: Evaluating _BCM failed (20090903/video-528) > > > > > This sounds like a win7 compatibility issue that I've seen before. > > please try boot option acpi_osi="!Windows 2009" and see if it helps. > > Yes, indeed it does! It results in a few other differences too; I > can't tell whether they are good, bad, or neutral. > well, I don't see any other difference except some code execution ordering issue. I read the acpidump of this laptop, and it also confirms that this (_BCM stuff) is the only place that acpi_osi="!Windows 2009" changes. thanks, rui > > BTW, it would be great if you can attach the acpidump of this laptop and > > the dmesg output after boot. > > Attached (the dmesg log is from a boot without the acpi_osi option). > Below is a diff between that boot and one with acpi_osi="!Windows > 2009". (I believe all those "name_count maxed" lines come from > mounting an NTFS filesystem; you can ignore them.) > > Alan Stern > > > --- dmesg1.txt 2010-06-01 21:23:34.569204151 -0400 > +++ dmesg2.txt 2010-06-01 21:18:21.329732003 -0400 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
